How to tag discontinued campings and places not suitable for camping?

How can a location where one should not camp best be mapped? We are running into two types of situations:

  • Established campings: (1) camping existed before, but has been discontinued, (2) a hotel offered camping facilities, but stopped doing so although the hotel itself is still in business. The place may still be on lists of campings, but should not be used
  • Wild camping locations: People have tried to camp at a location, but were chased away by police, were robbed, or were not allowed access. Other people looking for a place to camp should know this